Access credit markets as efficiently as other asset classes.
Generate clear signals with our abundance of high-quality data. Use our sophisticated trading protocols and all-to-all trading platform, Open Trading™, to expand your execution possibilities. Connect to some of the broadest and deepest datasets in the fixed income universe with simple to use APIs.
Get everything you need to research, build, deploy and benchmark your strategies in one place.
Incomparable data sources
Composite+ provides a more accurate reflection of the market by assessing signals from the vast MarketAxess trading system.
These signals include both transacted and indicative information, as well as unique global sources. Because our trading venue sees more credit market activity than any single participant, the quality of the information you receive is second to none.
Member of the S&P 500 Index since 2019.
- Global network of 1,800 market players
- 500+ active hedge funds
- Cost savings: $300M for our clients (1H, 2022)
- Award-winning trading platform
Complete and dynamic pricing for the entire fixed income trading lifecycle
Composite+ takes the guess work out of pricing bonds, whether you’re trading a basket, creating a portfolio, marking your book or assessing risk, by applying a trusted methodology to price formation.
Unlike other evaluated pricing tools, Composite+ puts technology at the center of its model by leveraging our award-winning AI-powered pricing engine to analyze millions of proprietary data inputs.
Composite+ offers a price on even the most illiquid bonds, which is particularly useful for Portfolio Trading that puts a single price on an entire basket of bonds.
Supports index formation and portfolio construction by assessing the cost of taking a position in a bond.
Composite+ allows you to mark your books, assess market risk and review fund valuation.
Live Markets
Live order book for active and new corporate bonds
Live Markets is the next phase of innovation for our revolutionary all-to-all Open Trading marketplace. Complementing our existing RFQ trading functionality, Live Markets offers a dynamic solution for streaming execution on liquid, recently issued paper and actively traded story names.
*Currently only available to US participants.
Industry Recognition

Best-in-class data
Greater market insight and transparency in near real-time.
- Predictive pricing tools
- Near real-time tapes
- Enriched and raw data
Better execution
More efficiency, more liquidity, more alpha.
- All-to-all trading
- Auto-execution
- Diverse liquidity sources
Simple connectivity
The data you need, the way you want it.
- Easy to use APIs
- No tech disruption
- Seamless integration
"Artificial intelligence and algorithms are setting the market price for credit, using factors and correlations humans can guess but not follow."
Innovation in electronic trading has reshaped the market for private banks and wealth managers in Switzerland. Erik Tham—Head of Private Banking for Benelux and Switzerland—discusses how data, liquidity, and efficiency have all been transformed by technology and explains how you can leverage these innovations so you can trade smarter.
Our AI-powered pricing engine, Composite+™, takes inspiration from tech giants, the Wall Street Journal profiles. "If Google can use AI to drive a car, we can price a bond with accuracy," our former CIO, Nick Themelis, highlights AI as the future of bond trading.